@foxxy @i @Pawlicker Not sure if you'll hear it considering I'm one of the biggest personas non grata on your side of the network, but here we go.
To say you're overreacting would be huge understatement, a good half of your issue is spent on deliberate scenarios you imagined. Scenarios none of which apply to a single bridge instance in any larger capacity than any other server you federate with. Case in point, Alex Gleason's ActivityPub<->Nostr bridge (mostr.pub) has been up for a year at this point with zero opt-out requests received. And literally nothing apocalyptic has happened, nothing that can't be handled via the usual moderation tools at other instance admins disposal.
ActivityPub is just that, servers sending activities to each other, and unless you maintain some sort of federation whitelist, your automony ends with your server as you can't ever be sure all the 8723 other instances you federated with implement the protocol in the exact same way your homeserver does.